cln-plugin: don't panic if notification handler returns error

Changelog-None

Author: daywalker90

external/libwally-core

@@ -813,7 +813,17 @@ where
                         match &self.wildcard_subscription {
                             Some(cb) => {
                                 let call = cb(plugin.clone(), params.clone());
-                                tokio::spawn(async move { call.await.unwrap() });
+                                tokio::spawn(async move {
+                                    match call.await {
+                                        Ok(_o) => (),
+                                        Err(e) => {
+                                            log::warn!(
+                                                "Wildcard notification handler error: '{}'",
+                                                e
+                                            )
+                                        }
+                                    }
+                                });
                             }
                             None => {}
                         };
@@ -823,7 +833,14 @@ where
                         match self.subscriptions.get(method) {
                             Some(cb) => {
                                 let call = cb(plugin.clone(), params.clone());
-                                tokio::spawn(async move { call.await.unwrap() });
+                                tokio::spawn(async move {
+                                    match call.await {
+                                        Ok(_o) => (),
+                                        Err(e) => {
+                                            log::warn!("Notification handler error: '{}'", e)
+                                        }
+                                    }
+                                });
                             }
                             None => {
                                 if self.wildcard_subscription.is_none() {